Title:
ELECTRICALLY DRIVEN TOOL
Document Type and Number:
WIPO Patent Application WO/2017/159201
Kind Code:
A1
Abstract:
[Problem] To provide an electrically driven tool wherein efficient cooling using a simple configuration is possible.
[Solution] An impact driver 1 as an example of an electrically driven tool is provided with: a motor 11 having a motor shaft 56; speed increase mechanisms (planetary gear mechanism 79 and bevel gear mechanism 89) for increasing the rotational speed of the motor shaft 56; and centrifugal fans 78, 86, 86 connected to the speed increase mechanisms. The impact driver 1 is further provided with an anvil 18 driven by the motor shaft 56. The motor shaft 56 is aligned with the front-rear direction. The anvil 18 is disposed in front of the motor shaft 56. The centrifugal fan 78 and the planetary gear mechanism 79 are arranged at an axial end (rear end) of the motor shaft 56.
Inventors:
UMEMURA SHINGO (JP)
KUMAGAI RYUNOSUKE (JP)
KIMURA KAZUYA (JP)
KUMAGAI RYUNOSUKE (JP)
KIMURA KAZUYA (JP)
Application Number:
PCT/JP2017/005731
Publication Date:
September 21, 2017
Filing Date:
February 16, 2017
Export Citation:
Assignee:
MAKITA CORP (JP)
International Classes:
B25F5/00; B23Q11/12; H02K9/06
Foreign References:
| JP2010069571A | 2010-04-02 | |||
| JPH09140095A | 1997-05-27 | |||
| JP2010120120A | 2010-06-03 |
Attorney, Agent or Firm:
ISHIDA Yoshiki (JP)
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